Tracking issue for 0.7.0

[nia-e]

Absolutely necessary:

• Close #103
• Merge #82 <=> Close #11
• Close #78
• Close #73
• Close #140
• Finish up bindings to more LVGL features

Maybe:

• Close #68
• Close #49
• Close #1 (quite optimistic, I don't know anything about CSS)

If all that is finished:

• Close #100

[nia-e]

Given that there have been some (relatively major!) bugfixes and fixed functionality since 0.6.2 to the point where it's pretty fundamentally broken, should we version bump 0.7 soon and move these features for 0.8? Semver says we need to bump minor version because of breaking changes

[nia-e]

cc: @rafaelcaricio

[nia-e]

This thread suggests that it would be fine to release the current changes as 0.6.3 (if a bit weird). They mostly fix functionality and/or implement things that should have been there and were mostly my oversight but idk